unacceptable

adjective

un·​ac·​cept·​able ˌən-ik-ˈsep-tə-bəl How to pronounce unacceptable (audio)
-ak-
: not acceptable : not pleasing or welcome
unacceptability noun
unacceptably adverb

Examples of unacceptable in a Sentence

a word that is unacceptable in formal English Some of her ideas were unacceptable to other people.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Restaurants rated unacceptable must close to fix their issues and require reinspection prior to reopening. Lillie Davidson, Fort Worth Star-Telegram, 26 Mar. 2025 Plagiarism Policies Plagiarism is unacceptable in academic circles. Rowan Briggs, Mercury News, 24 Mar. 2025 Americans heading into the 2026 and 2028 elections with a less secure system than in 2020 or 2024 is an unacceptable and avoidable step backward. Kevin Sabet, Newsweek, 24 Mar. 2025 That is completely unacceptable to our national security. CBS News, 23 Mar. 2025 See All Example Sentences for unacceptable

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of unacceptable was in the 15th century

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Cite this Entry

“Unacceptable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unacceptable. Accessed 31 Mar. 2025.

Kids Definition

unacceptable

adjective
un·​ac·​cept·​able ˌən-ik-ˈsep-tə-bəl How to pronounce unacceptable (audio)
-ak-
: not acceptable : not pleasing or welcome
unacceptably adverb

More from Merriam-Webster on unacceptable

Last Updated: - Updated example sentences
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